feat: add support for File References API (list/get/add/delete)

src/main/java/com/crowdin/client/filereferences/FileReferencesApi.java

@@ -0,0 +1,47 @@
+package com.crowdin.client.filereferences;
+
+import com.crowdin.client.core.CrowdinApi;
+import com.crowdin.client.core.model.ResponseList;
+import com.crowdin.client.core.model.ResponseObject;
+import com.crowdin.client.filereferences.model.FileReference;
+import com.crowdin.client.filereferences.model.AddFileReferenceRequest;
+import com.fasterxml.jackson.core.type.TypeReference;
+
+public class FileReferencesApi extends CrowdinApi {
+
+    public FileReferencesApi(com.crowdin.client.core.model.Credentials credentials) {
+        super(credentials);
+    }
+
+    /**
+     * List File References
+     */
+    public ResponseList<FileReference> listFileReferences(Long projectId) {
+        String url = String.format("%s/projects/%d/file-references", this.url, projectId);
+        return this.httpClient.get(url, new TypeReference<ResponseList<FileReference>>() {});
+    }
+
+    /**
+     * Get File Reference by ID
+     */
+    public ResponseObject<FileReference> getFileReference(Long projectId, Long fileReferenceId) {
+        String url = String.format("%s/projects/%d/file-references/%d", this.url, projectId, fileReferenceId);
+        return this.httpClient.get(url, new TypeReference<ResponseObject<FileReference>>() {});
+    }
+
+    /**
+     * Add File Reference
+     */
+    public ResponseObject<FileReference> addFileReference(Long projectId, AddFileReferenceRequest request) {
+        String url = String.format("%s/projects/%d/file-references", this.url, projectId);
+        return this.httpClient.post(url, request, new TypeReference<ResponseObject<FileReference>>() {});
+    }
+
+    /**
+     * Delete File Reference
+     */
+    public void deleteFileReference(Long projectId, Long fileReferenceId) {
+        String url = String.format("%s/projects/%d/file-references/%d", this.url, projectId, fileReferenceId);
+        this.httpClient.delete(url);
+    }
+}

src/main/java/com/crowdin/client/filereferences/model/AddFileReferenceRequest.java

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+package com.crowdin.client.filereferences.model;
+
+import lombok.Data;
+
+/**
+ * Request body for creating a new File Reference.
+ */
+@Data
+public class AddFileReferenceRequest {
+    private String name;     // Name of the reference
+    private String type;     // Type of the reference (e.g., "file" or "asset")
+    private Long fileId;     // ID of the file this reference points to
+}

src/main/java/com/crowdin/client/filereferences/model/FileReference.java

@@ -0,0 +1,13 @@
+import com.crowdin.client.filereferences.model.AddFileReferenceRequest;
+
+package com.crowdin.client.filereferences.model;
+
+import lombok.Data;
+
+@Data
+public class FileReference {
+    private Long id;
+    private String name;
+    private String type;
+    private Long projectId;
+}